71520900 has 72 divisors (see below), whose sum is σ = 225756384. Its totient is φ = 17337600.

The previous prime is 71520899. The next prime is 71520901. The reversal of 71520900 is 902517.

It is an interprime number because it is at equal distance from previous prime (71520899) and next prime (71520901).

It is not an unprimeable number, because it can be changed into a prime (71520901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7537 + ... + 14136.

Almost surely, 2^71520900 is an apocalyptic number.

It is an amenable number.

71520900 is an abundant number, since it is smaller than the sum of its proper divisors (154235484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71520900 is a wasteful number, since it uses less digits than its factorization.

71520900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21701 (or 21694 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 71520900 is about 8457.0030152531. The cubic root of 71520900 is about 415.0919620075.

The spelling of 71520900 in words is "seventy-one million, five hundred twenty thousand, nine hundred".